NEW YORK (October 30, 2012)--With lower Manhattan still largely without power Tuesday, U.S. stock exchanges tested contingency plans to ensure that trading resumes as soon as possible this week after Hurricane Sandy smashed into the East Coast and shut down operations.

U.S. markets were closed for a second day Tuesday, but the New York Stock Exchange said that despite reports that its historic trading floor suffered irreparable damage, no such damage has occurred.

Sections of Manhattan were inundated with water and power was shut off to thousands of people and businesses Monday night.

Futures trading closed at 9:15 a.m. Eastern Tuesday, though volume was very light.

Dow Jones industrial futures rose 8 points to 13,062.

The broader S&P futures added 3.5 points to 1,411.10.

Nasdaq futures slipped 3.75 points to 2,655.25.